Can deteriorated engine oil still be added?

[StevenFitz]

Deteriorated engine oil cannot be added. Continued use will accelerate engine wear. If the engine oil has deteriorated, it must be replaced immediately. When changing the oil, the oil filter must also be replaced. The oil filter is used to filter the engine oil and is crucial for the engine. Engine oil, also known as engine lubricant, serves to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Engine oil consists of base oil and additives. The base oil is the main component of the lubricant, determining its basic properties, while the additives compensate for and improve the shortcomings of the base oil, imparting new characteristics. Additives are an essential part of engine oil.

[VonLorenzo]

As a car enthusiast who frequently tinkers with vehicles, I firmly believe that deteriorated engine oil must never be added, as it can lead to serious trouble. When engine oil deteriorates, it loses its lubricating properties, causing engine components to grind against each other like they're in a brawl, accelerating wear and even risking seizure. Moreover, contaminants in deteriorated oil—such as dust, water, or degraded oil film—can clog oil passages, leading to engine overheating and terrifyingly loud noises. I recall one oil change where the oil was dark and sticky; forcing it in would've surely cost thousands in repairs. My advice is to regularly check your oil's condition—if it's darkened or has an odd smell, replace it immediately; don't cut corners. Routine maintenance, like checking the dipstick every 5,000 km, can significantly extend your car's lifespan. An oil change is simple and affordable—a small investment in fresh oil far outweighs the cost of major repairs. Remember: deteriorated oil should only be disposed of—safety first!

[DeLondon]

I've been driving for over a decade and learned the hard way about using degraded engine oil. That time, I tried to save effort by not changing the oil, just topping it up with some degraded oil. The engine started making strange noises, and when we opened it up later, it was full of sludge with severe wear. The repair costs nearly emptied my wallet. Since then, I've made it a rule never to let degraded oil near my engine. Degraded engine oil is like spoiled food—it'll give you a stomachache. Putting it in your engine can cause parts to rust or stick together, ruining the lubrication, increasing fuel consumption and emissions. My advice: take a few minutes during each service to check your oil. Pull out the dipstick—if the oil is clear, it's good; if it's black or foamy, that's a sign of degradation. If you find degraded oil, don't hesitate—head straight to the garage for a change. Don't make my mistake of saving pennies to lose pounds. Regular maintenance also reduces unexpected breakdowns and keeps your car running smoothly.

[JaydenMarie]

From a professional maintenance perspective, adding degraded engine oil is asking for trouble. I've handled numerous cases where degraded oil caused severe carbon buildup inside the engine, reducing efficiency or even leading to seizure. The degradation could result from prolonged use or contamination by external pollutants like dust or moisture. Once added, engine protection disappears—not only do repair costs skyrocket, but there's also a risk of dangerous roadside breakdowns. Therefore, if the oil is degraded, it must be replaced entirely rather than topped up. Checking is simple: use the dipstick to see if the oil appears cloudy, overly viscous, or has significantly changed color. If degraded, take it to a shop for safe disposal. Keeping oil fresh is crucial—regular changes save money, reduce overall wear, and provide peace of mind.